By Staff

BOSTON (CBS) – Officials at Boston University say erector crew error is to blame for an accident that sent steel beams tumbling at a construction site.

Investigators found a 44-foot beam was not properly constructed, causing it to fall.

READ MORE: Museum Of Fine Arts To Celebrate Juneteenth With Outdoor Programs & Activities

Steel columns topple at Boston University construction site (WBZ-TV)

The falling beam created a dramatic domino effect that was captured on video.

READ MORE: 'You Might Have A Hard Time': Passengers at Logan Airport Frustrated Over Limited, Expensive Parking

Two workers were hurt but released from the hospital the same day.

MORE NEWS: Intermittent Fasting May Not Be As Effective As Calorie-Restricted Dieting

Construction is continuing on BU’s new Center for Computing and Data Sciences, despite the incident. Staff